Lessons Fulfilling NCTM Standard 2c
Use mathematical models to represent and understand quantitative relationships

Absolute Value Equations / Graphs
18 videos by 4 teachers 
Advanced Systems of Equations
9 videos by 7 teachers 
Algebraic Word Problems
35 videos by 4 teachers 
Asymptotes
9 videos by 3 teachers 
Basic Equations
21 videos by 4 teachers 
Basic Interest
6 videos by 2 teachers 
Domain and Range
12 videos by 1 teacher 
Doubling / Half Life
1 video by 1 teacher 
Exponential Functions
7 videos by 2 teachers 
Factoring Application Problems
8 videos by 1 teacher 
Factoring Basic Trinomials
9 videos by 6 teachers 
Graphing Lines
37 videos by 6 teachers 
Graphing Systems of Equations
9 videos by 4 teachers 
Inequalities on a Number Line
17 videos by 8 teachers 
Intro to Relations and Functions
28 videos by 5 teachers 
Linear Approximations
1 video by 1 teacher 
Linear Functions
10 videos by 2 teachers 
Logarithms and Exponentials
94 videos by 4 teachers 
Logistic Functions
3 videos by 1 teacher 
Mixture Problems
8 videos by 1 teacher 
Modeling Functions
5 videos by 1 teacher 
NonLinear Functions
12 videos by 2 teachers 
Percents
30 videos by 4 teachers 
Piecewise Functions
7 videos by 1 teacher 
Polynomial Equations
27 videos by 6 teachers 
Properties of Functions
14 videos by 3 teachers 
Proportions
5 videos by 2 teachers 
Quadratic Functions
18 videos by 2 teachers 
Rational Functions
14 videos by 3 teachers 
Solving Linear Equations
59 videos by 8 teachers